Extreme Networks ExtremeWare XOS 11.3, Manual

Page: 95 / 698

Using the Simple Network Time Protocol
ExtremeWare XOS 11.3 Concepts Guide
95
NTP updates are distributed using GMT time. To properly display the local time in logs and other time-
stamp information, the switch should be configured with the appropriate offset to GMT based on
geographical location.
Table 15 lists GMT offsets.
Table 15: Greenwich Mean Time offsets
GMT
Offset in
Hours
GMT Offset
in Minutes
Common Time Zone References Cities
+0:00 +0 GMT - Greenwich Mean
UT or UTC - Universal (Coordinated)
WET - Western European
London, England; Dublin, Ireland;
Edinburgh, Scotland; Lisbon, Portugal;
Reykjavik, Iceland; Casablanca, Morocco
-1:00 -60 WAT - West Africa Cape Verde Islands
-2:00 -120 AT - Azores Azores
-3:00 -180 Brasilia, Brazil; Buenos Aires, Argentina;
Georgetown, Guyana
-4:00 -240 AST - Atlantic Standard Caracas; La Paz
-5:00 -300 EST - Eastern Standard Bogota, Columbia; Lima, Peru; New York,
NY, Trevor City, MI USA
-6:00 -360 CST - Central Standard Mexico City, Mexico
-7:00 -420 MST - Mountain Standard Saskatchewan, Canada
-8:00 -480 PST - Pacific Standard Los Angeles, CA, Santa Clara, CA,
Seattle, WA USA
-9:00 -540 YST - Yukon Standard
-10:00 -600 AHST - Alaska-Hawaii Standard
CAT - Central Alaska
HST - Hawaii Standard
-11:00 -660 NT - Nome
-12:00 -720 IDLW - International Date Line West
+1:00 +60 CET - Central European
FWT - French Winter
MET - Middle European
MEWT - Middle European Winter
SWT - Swedish Winter
Paris France; Berlin, Germany;
Amsterdam, The Netherlands; Brussels,
Belgium; Vienna, Austria; Madrid, Spain;
Rome, Italy; Bern, Switzerland;
Stockholm, Sweden; Oslo, Norway
+ 2:00 +120 EET - Eastern European, Russia Zone 1 Athens, Greece; Helsinki, Finland;
Istanbul, Turkey; Jerusalem, Israel;
Harare, Zimbabwe
+3:00 +180 BT - Baghdad, Russia Zone 2 Kuwait; Nairobi, Kenya; Riyadh, Saudi
Arabia; Moscow, Russia; Tehran, Iran
+4:00 +240 ZP4 - Russia Zone 3 Abu Dhabi, UAE; Muscat; Tblisi;
Volgograd; Kabul
+5:00 +300 ZP5 - Russia Zone 4
+5:30 +330 IST - India Standard Time New Delhi, Pune, Allahabad, India
+6:00 +360 ZP6 - Russia Zone 5
+7:00 +420 WAST - West Australian Standard
+8:00 +480 CCT - China Coast, Russia Zone 7
+9:00 +540 JST - Japan Standard, Russia Zone 8